Flaxleaf fleabane (Conyza bonariensis(L.) Cronquist) has been considered a major weed in dryland cropping systems in Australia. Resistance in populations of C. bonariensis to glyphosate has also been confirmed. The weed is very difficult to control with any single herbicide application especially when herbicides are applied after the bolting stage. Anecdotal evidence suggests that some chemicals might affect fleabane seed viability and/or dormancy based on the observations that seeds collected from certain paddocks did not germinate. Glasshouse experiments were conducted to investigate whether applications of glyphosate and paraquat could sterilise the weedseeds and affect seed dormancy of fleabane. Results showed that both herbicides affected the seed viability and dormancy, depending on the application timingand the herbicide. The herbicide-induced dormancy decreased during storage under laboratory conditions.
|Title of host publication||Proceedings of the 20th Australasian Weeds Conference|
|Editors||Rod Randall, Sandy Lloyd, Catherine Borger|
|Publisher||Weed Society of Western Australia|
|Number of pages||4|
|Publication status||Published - 2016|
|Event||20th Australasian Weeds Conference (2016) - Pan Pacific Hotel, Perth, Australia|
Duration: 11 Sep 2016 → 15 Sep 2016
http://caws.org.au/awc_contents.php?yr=2016 (Conference proceedings)
http://caws.org.nz/old-site/awc_contents.php?yr=2016 (conference website)
|Conference||20th Australasian Weeds Conference (2016)|
|Abbreviated title||Science, Community and Food Security: the Weed Challenge|
|Period||11/09/16 → 15/09/16|
Wu, H., Shephard, A. J., Asaduzzaman, M., & Broster, J. (2016). Can herbicides affect seed dormancy and viability of flaxleaf fleabane (Conyza bonariensis (L.) Cronquist). In R. Randall, S. Lloyd, & C. Borger (Eds.), Proceedings of the 20th Australasian Weeds Conference (pp. 128-131). Weed Society of Western Australia.